Shoe-sewing machine.



E. BQ BEAN.

SHOE SEWING MACHINE.

APPLIGATIOI; :FILED ooT.2,19o5.

Paemea Ap?. 26, 1910.

4 SHEETS-SHEET 1l E. E. BEAN.v

SHOE SEWING MACHINE.

APPLIUATION FILED 00T. 2,1905.

4 SHEETS-SHEET 2.

Patented Apr.26,191o. r

WITNESSES. INVENTOR'- @www E. E BEAN. SEDE SEWING MACHINE.

MPL10/T1011 FILED 002122.19105A 956;,469. Patented Apr. 26, 1910.

4 SHEETS-SHEET 3.

MTNESSES.

gaf/ {wm E. E. BEAN.

SHOE SEWING MACHINE. APPLIGATION FILED 00T. 2,1905.

Patented A131226, 90.

4 SHEETS-SHEET 4.

INVENTOR.

WITNESSx-:SQ

(5mg geen.,

UNITED STATES ATE T FFICE.

SHOE-SEIN' ING MACHINE.

To all whom it may concern:

Be it known that I, EDWIN E. BEAN, of Varner, in the county of Merrimackand State of New Hampshire, have invented certain new and usefulImprovements in Shoe-Sewing Machines, of which the following, taken inconnection with the drawings now filed in this connection, is aspecification.

My invention relates to improvements in that class of shoe sewingmachines commonly known as loop lock machines, their stitches beingformed with two threads by drawing a loop of one thread through theupper and sole of a shoe by means of a curved hook needle, and thenpassing a short loop of another thread through the first loop, and thendrawing the first loop up tightly around the short loop, thereby joiningthe upper to the sole of a shoe by the combined threads.

The mechanisms and devices for performing the above operation by anorganized machine are described in Letters Patent of the United Statesgranted to me October 11, 1898, No. 612,150; January 15, 1901, No.666,225; and April 15, 1902, No. 697,600, and they do not perform theirfunctions satisfactorily as constructed, combined, and operated in theaforesaid machines, and the object of this my present invention is toremedy such defects and render the ma.- chines more practical anduseful.

Having stated the object of my invention, I will now proceed to show howI have carried it out. v

Referring to the drawings, Figure 1 represents a left hand sideelevation of the upper part of the frame of a machine of this class,showing the needle thread guide, thread finger, looping hook, cast-off,thread measurer and channel guide in their respective positions when themachine is ready to start up to form a stitch. Fig. 2 is a right handside elevation of the same, showing the changed position of the loopinghook, castoif, and thread measurer, also the relative positions of thetwo threads at the point where the needle has drawn its loop through thematerial to its fullest extent. Fig. 3 is a front end elevation of Fig.1 showing the relative positions of the needle, cast-off, thread guide,and lifting linger, from a front view point, and Fig. l a front view ofFig. 2, showing the changed relative positions Specification of LettersPatent.

Application filed October 2, 1905.

Patented Apr. 26, 1910.

Serial No. 280,900.

of the needle and cast-off. Fig. 5 is a rear view of the devices fortransmitting lateral movements to the cast-oif. Fig. 6 is a left handside view of the needle threading devices and mechanism, showing thethread guide and lifting finger in their highest p0- sitions, relativeto the needle, after depositing the thread into the hook, the dottedlines showing them in their lowest positions when drawn backward to theposition shown in Fig. 2. Fig. 7 is a plan view of Fig. 6, showing therelative positions of the needle, thread guide, and lifting finger, withthe thread measurer, just prior to being carried upward to the positionshown in Fig. 6. Fig. 8 is a cross section, taken on a vertical line g/with the center of the pivoted guideway, showing details of theconstruction of the several parts at that point; Fig. 9 is a left handside view of the needle, looping hook, cast-off, and threads, in theirrelative positions when the needle has been advanced past, and above thecast-off far enough to disengage its loop from its hook.

The fragmentary connecting rods C, B and E shown in Figs. 1, 2 and 6,are oscillated by cams (not shown) mounted in the usual way on a drivingshaft, journaled in the frame of the machine, their connection with theconnecting rods being fully set forth in my patent of January 15, 1901,No. 666,225, as are also the channel guide Z and thread measurer X, nofurther description of them in detail being deemed necessary in thisconnection.

The letter T represents the primary, or needle thread, and the letter Lthe locking, or secondary thread.

Referring' to the drawings, Figs. 1 and 2 represent the upper forwardpart of the frame of a machine of this class, on which are mounted theseveral devices comprising my new invention, which comprises a curvedhook needle B secured (in the usual manner) to a segment B pivoted tothe frame, and

oscillated by a connecting rod B in the .thread lifting finger F',provided with a shoulderl ou itsl upper side, see Figs. 2, (3 and T. Thearm F, Figs. G and T, is pivoted at its center to the forward end of asliding bar G, by a screw j', its rear end being provided with a curvedslot F, into which a loosely fitting pin 7, secured to the frame by abracket f, projects downwardly. The sliding bar G is tongued on itsinner side into a grooved guideway H, and is held in place thereon by acap piece l', through the center of which a retaining screw z' passesand extends through a longitudinal slot g in the bar G, see Fig. (5, andis screwed into the center of the guideway H and its pivoted shaft It,see Fig. 8. The guideway H, Fig. 8, is provided with a short shaft lt,projecting from its inner side, which is journaled in the frame, andheld from moving laterally by a nut it. The sliding bar G, Fig. (3, isalso provided with a slot g, curved upward at its outer end, throughwhich projects a. loosely fitting fixed pin g secured in the frame A,and also has secured to it a downwardly projecting arm G', to the lowerend of which a connecting rod G is pivoted by a screw g. The connectingrod G is oscillated longitudinally in the usual manner, and by itsforward and backward movements, in conjunction with the action of theslots Ff g and guide pins f 9", carries the thread guide F and liftingfinger F into the various positions shown in Figs. l, 6 and T. Fig. 7shows the carrier F and finger F/ in two dierent positions relative tothe needle, the dotted lines showing them when drawn back to theirfullest extent, with the thread T extended from its guide F intoconjunction with the thread L, which has been passed through its guideZ, the loose ends of both threads being controlled, and held, in theposition indicated by dotted lines, by the operator, previous tostarting the machine to form the first stitch, and when the guide F andfinger F have been advanced to the position shown in full lines thethread T will be carried forward and bent around the thread measurer,and bent around the shoul.- der of the finger F, extending at a rightangle across the path of the needle, and when the guide and finger arestill further advanced they will be carried forwardly and upwardly anddeposit a strand of the thread T into the hook, substantially at a rightangle with the needle, which then draws a loop of said thread back intothe material, thereby securing the loose end of the thread T, the looseend of the thread L being secured when the first stitch has beencompleted, requiring no further aid from the operator in makingsucceeding stitches.

The looping hook C, Figs. l, 2 and 9, which is normally located outsideof the arc of the path of the needle, is secured to a pendent arm C,hinged at its upper 'end to a horizontal arm C, said arm on its innerside being provided with a short shaft see Figs. l and 3, which isjournaled in the upper part of the frame, to the outer end of which adownwardly projecting arm E is secured, said arm being connected at itslower end to a connecting rod E by a pivot screw e. The connecting rodE, Fig. 2, is oscillated longitudinally in the usual manner andtransmits a vertical movement to the looping hook, through theirintermediate connecting devices. The connecting rod on being oscillated, transmits longitudinal movements to the arm G and looping hook.

The cast-off and operating devices, Figs. l, 2, 3 and t, consists of ashort finger D (preferably round in form) which is secured in the outerend of a curved depending arm D', the upper end of which is integralwith a hub D, which is journaled on a short shaft d', on which it turnsand slides longi tudinally, the inner end of said shaft d being firmlysecured to a forwardly projecting arm A forming part of the frame.Another arm D, also integral with the hub D, projects upward and isprovided with a slot CZ, near its upper end, through which projects around pin e, the inner end of which is firmly secured to the extendedend, E, of the connecting rod E, the backward oscillation of which (inperforming its other function of operating the looping hook) turns thehub D on the shaft d, and carries the cast-off D from its vhighestposition as shown in Fig. l, to its lowest posi-tion as in Fig. Theoscillation of the connecting rod E also effects the transversemovements of the cast-ofil D, and carries it from its position shown inFigs. l and 3 to those shown in Figs. 2 and d in the following manner.The hub D, see Figs. 2, 3 and 5, has a projection D, in the form of asegment, extending rearwardly, in the periphery of which a spiral grooveDW, see Fig. 5, is provided, which is traversed by a fixed pin c securedin a bracket CZ, which is in turn secured to the frame A, the resultantaction of the groove D and pin d being to carry the hub D, its arm D andcast-off D toward and from the path of the needle.

The above described devices when incorporated in a machine of the classdescribed, and the several cams adjusted in the proper relation witheach other, and the driving shaft turned, so as to bring the needle,thread guide, looping hook, and cast-off into their initial positions,shown in Fig. l, and the threads, leading from their thread supplies,passed through their respective guides, the machine is ready to bestarted up to form its first stitch.

The operation is as follows :MThe operator at this point introduces thework into the machine controlling the loose ends of the threads in theusual way, and then proceeds to start the machine and the needleadvances until its point has passed forward through the work, when thethread guide and lifting finger start forward from their initialpositions, and they, with the needle, advance together until the needlereaches the end of its forward stroke, where it rests, at which time thethread guide and lifting fingerreaches the position, shown by dottedlines, in Fig. 6, and continues to ad-V vance until it reaches theposition shown in full lines, where they rest, having deposited thethread in the hook of the needle. The needle now retreats, carrying aloop of thread back with it, until its hook is back in the work, atwhich point the thread guide and finger start backward in their reversemovements, the needle meanwhile moving in unison, until they havereached their initial positions, where they rest, the needle having atthis time reached two-thirds of its backward stroke, at which point thelooping hook starts forward, meets the needle, passes forward throughits loop and continues to advance until its hook is over and beyond thelocking thread L, at which time the needle reaches the end of itsbackward stroke, where it rests. The looping hook is now moved downward,engages with the locking thread, and draws a short loop of it backthrough the needle loop, as shown in Fig. 1. Simultaneously with thedownward movement of the looping hook the cast-oft is carried forwardand downward from its initial position, shown in Figs. 1 and 3, to theposition shown in Figs. 2 and 9, having engaged with the upper sides ofthe two strands of thread forming the needle loop and bent them downbelow the path of the needle, where it, together with the looping hook,rests. The needle now advances from its initial position until its hookpasses by, and above the cast-o a suiiicient distance to disengage itsloop from its hook, as in Fig. 9, at which point the loop is left freeto be drawn up, in the usual manner, around the locking loopsufficiently taut to prevent the locking loop from escaping from theneedle loop when freed from the looping hook. At this point the loopinghook starts on its reverse movement, releasing the locking loop, afterwhich it is carried back to its initial position, where it rests.Simultaneously with its reverse movement just described, the needle andcast-o' are carried backward from their positions shown in Fig. 9 totheir initial positions, as in Fig. 1. The final tightening up of theneedle loop around the locking loop to set the stitch, which, iseffected in the usual manner, takes place at the point where the loopinghook frees its loop, which operation completes the first stitch, andleaves the several devices at rest in their initial positions, ready torepeat the operation. At the point in the operation just described, z'.c., when the stitch has finally been set, the thread guide F and fingerF which have remained at rest in their initial positions, are carriedbackward laterally to their full extent (as shown by dotted lines inFig. 7) to allow the thread measurer to become engaged with the threadT, after which they are carried forward'. to their initial positions,with the loose ends ofthe thread attached to the work, they requiring nofurther aid from the operator in starting to make the second stitch.

Having now described the construction and mode of operation of my newinvention, what I claim and desire to secure by Letters Patent is l. Ina sewing machine of the class described, the combination of a curvedneedle having its hook on its side of longest curvature adapted to drawa loop of thread through the work, a movable arm D, and cast off fingerD, secured thereto, and located at one side of the needle, means toadvance said finger across the needle path and swing it down below t-heneedle, engaging with the upper sides of the threads that form theneedle loop, and force it out of the hook of needle.

2. In an organized sewing machine of the class described, thecombination of the following instrumentalities; a curved hook needlehaving its hook on its side of longest curvature, means to oscillate andadvance it through the work, to engage with, and afterward draw a loopof thread back through the work, a thread guide F, and finger F, meansto carry them from their normal positions forwardly and upwardly wherebythey carry a strand of thread, upward, into the hook of the needle, alooping hook C, and means to carry it through the needle loop and draw ashort strand of locking thread back through the needle loop, and a caston?, comprising a horizontal linger D, and means to oscillate itlaterally to and across the path of movement of the needle as, and forthe purpose set forth. i

3. In a sewing machine of the class described, in combination, a curvedneedle B, having its hook on its side of longest curvature, means tooscillate it in the arc of a circle and advance it through the work, anda thread guide F and thread lifting finger F', and means to oscillateand advance them from their initial position, forwardly and upwardly,whereby they carry a strand of primary thread upward into the hook ofthe needle, and a thread disengaging finger D, means to oscillate andadvance it into contact with the upper sides of the threads forming theneedle loop and bend them down below the path of the needle, and alooping hook C, normally located out-eide of In testimony whereof I havesigned my the are ot' the path of the needle, means tonznne to thisspecification in the presence oit oscillate und advance it through the-needle two subscribing Witnesses.

loop and engage it with n Strand of seoond- EDXVIN E. BEAN. ary threadand draw a short loop of said lVtneSSes:

thread back through the needle loop, sub- W'ILLIAM VHITE,

stantially as, and for the purpose set forth. ELLEN F. BEAN.

